Network system of projector

• US 8,640,196 B2
• Filed: 11/09/2010
• Issued: 01/28/2014
• Est. Priority Date: 01/21/2004
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Kubota, Shinji
• Primary Examiner(s): Poltorak, Peter
• Application Number:
  US12/942,838
• Publication Number:
  US 20110055325A1
• Time in Patent Office: 1,176 Days
• Field of Search: None
• US Class Current: 726/2
• CPC Class Codes: H04L 65/403 Arrangements for multi-party communication, e.g. for conferences data switching systems for conference H04L12/18; arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities H04M3/56; television conferencing systems H04N7/15
• CPC Class Codes: H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

A network system of a projector is provided in which a network connection is established between a plurality of information terminal apparatus and the projector, and an image data file owned by an information terminal apparatus can be commonly used. A network system of a projector is arranged by an information terminal apparatus and a projector connectable to the information terminal apparatus via a network. The information terminal apparatus is arranged by a personal computer which supplies image data to the projector, and personal computers which are connected to this personal computer by a wireless manner. When the network connection is established between the personal computer and the projector, and when the network connection between the personal computer and the personal computers is established, the image data is commonly used among these personal computers.

Claims

1. A projector capable of communicating with an image supply apparatus supplying an image data via a network, the projector comprising:

a password production unit that outputs a correct password;

a network interface that receives a password that is transmitted with a connection request from the image supply apparatus to the projector;

a display control unit that produces an image of the correct password; and

a projection unit that projects an image, on the screen, based on the image data and the correct password;

wherein

after the password that has been transmitted from the image supply apparatus matches the correct password, the correct password is displayed at a different position on the screen from previously displayed position of the correct password.

2. The projector according to claim 1 further comprising a storage unit that stores a specific code used by the image supply apparatus for establishing connection with the projector, the image data including the first correct password produced by the display control unit including the specific code.

3. The projector according to claim 1, the password production unit producing the correct password by using a random number table when the projector is turned ON.

4. The projector according to claim 1, the projector further comprising a password production instructing unit that instructs the password production unit to produce the correct password when an operation for producing the correct password is received.

5. The projector according to claim 1, wherein

the projector is connected to the image supply apparatus by way of wireless communication.

6. The projector according to claim 1, wherein

the correct password is numerals of 4 digits.

7. A system comprising:

a projector; and

an image supply apparatus supplying an image data to the projector via a network;

the projector includes;

a password production unit that outputs a correct password;

a network interface that receives a password that is transmitted with a connection request from the image supply device to the projector,

a display control unit that produces an image of the correct password; and

a projection unit that projects an image, on the screen, based on the image data and the correct password;

wherein

after the password that has been transmitted from the image supply apparatus matches the correct password, the correct password is displayed at a different position on the screen from a previously displayed position of the correct password.

8. The system according to claim 7, wherein

the projector further includes a storage unit that stores a specific code used by the image supply apparatus for establishing connection with the projector, the image data including the correct password produced by the display control unit including the specific code.

9. The system according to claim 7, the password production unit producing the correct password by using a random number table when the projector is turned ON.

10. The system according to claim 7, wherein

the projector further includes a password production instructing unit that instructs the password production unit to produce the correct password when an operation for producing the correct password is received.

11. The system according to claim 7, wherein

the projector is connected to the image supply apparatus by way of wireless communication.

12. The system according to claim 7, wherein the correct password is numerals of 4 digits.

13. A method for establishing a connection between a projector and an image supply apparatus supplying an image data to the projector via a network, the method comprising:

outputting a correct password by the projector;

receiving a password that is transmitted with a connection request from the image supply apparatus by the projector;

producing an image of the correct password by the projector;

projecting an image, on the screen, based on the image data and the correct password by the projector;

determining if the password that has been transmitted from the image supply apparatus to the projector matches the correct password;

if the password that has been transmitted from the image supply apparatus to the projector matches the correct password, establishing the connection between the projector and the image supply apparatus; and

after the password that has been transmitted from the image supply apparatus to the projector matches the correct password, displaying the correct password at a different position on the screen from a previously displayed position of the correct password.

14. The method according to claim 13 further comprising:

storing a specific code used by the image supply apparatus for establishing connection with the projector;

wherein

the image data including the correct password produced by the display control unit including the specific code.

15. The method according to claim 13, wherein

the correct password is produced by using a random number table when the projector is turned ON.

16. The method according to claim 13 further comprising:

instructing the projector to produce the correct password when an operation for producing the correct password is received.

17. The method according to claim 13, wherein

the projector is connected to the image supply apparatus by way of wireless communication.

18. The method according to claim 13, wherein

the correct password is numerals of 4 digits.